All categories

2 years ago

How do you solve -5=4x-8

Mathematics

2 answers:

IceJOKER [234]2 years ago

7 0

Answer:

3.25=x

Step-by-step explanation:

start with -5=4x+8

subtract 8 from each side to get:

-13=4x

divide each side by 4 to get your answer:

-3.25=x-

tangare [24]2 years ago

6 0

Answer:

$x = - 3.25$

Step-by-step explanation:

-5 = 4x + 8

-5 - 8 = 4x + 8 - 8

-5 + (-8) = 4x

-13/4 = 4x/4

Therefore, x = -3.25

-5 + (-8) = 4x

Same Change Change (SCC) rule for integers was applied here.

You might be interested in

Which would you use to compare 10 / 12 and 2 / 5 a common numerator or common denominator?

BartSMP [9]

We can compare 2 fractions by means of the cross multiplication method. In our case, we have

since 50 is greater than 24 then 10/12 is greater than 2/5:

$\frac{10}{12}>\frac{2}{5}$

3 0

9 months ago

Find the area of the trapezoid

DiKsa [7]

Answer:

20 is the answer

Step-by-step explanation:

I did the math.hope it helps :)

3 0

3 years ago

A cylinder has radius r and height h. a. How many times greater is the surface area of a cylinder when both dimensions are multi

kondor19780726 [428]

To find it directly

A = 2 pi r h

A is proportional to rh

factor 2

A is multiplied by 2 * 2 = 4

factor 3

3 * 3 =9

factor 5

5 * 5 = 25

factor 10

10 * 10 = 100

(b) the increase in A by factor x is x^2

c(20)^2 = 400

3 0

3 years ago

There are 235 whistles and 42 bells in the store. Ryan counts 128 whistles on the shelf. How many whistles are not on the shelf

yanalaym [24]

There would be 107 whistles
-equation- 235-128=107

7 0

3 years ago

Rosetta wants to estimate the percentage of people who rent their home. She surveys 250 individuals and finds that 48 rent their

Andreas93 [3]

Answer:

$0.192 - 1.645\sqrt{\frac{0.192(1-0.192)}{250}}=0.151$

$0.192 + 1.645\sqrt{\frac{0.192(1-0.192)}{250}}=0.233$

Step-by-step explanation:

Information given

$X= 48$ number of people who rent their home

$n= 250$ represent the sample size

$\hat p =\frac{48}{250}= 0.192$ represent the proportion of people who rent their home

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by $\alpha=1-0.90=0.1$ and $\alpha/2 =0.05$ . And the critical value would be given by:

$z_{\alpha/2}=\pm 1.645$

The confidence interval for the mean is given by the following formula:

$\hat p \pm z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$

If we replace the values obtained we got:

$0.192 - 1.645\sqrt{\frac{0.192(1-0.192)}{250}}=0.151$

$0.192 + 1.645\sqrt{\frac{0.192(1-0.192)}{250}}=0.233$

3 0

3 years ago